Hudson Bay Capital Management
XFOR icon

Hudson Bay Capital Management’s X4 Pharmaceuticals XFOR Stock Holding History

Hudson Bay Capital Management’s Portfolio XFOR Stock Details XFOR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-50,287
Closed -$208K – 1727
2026
Q1 		$208K Buy
50,287
+18,048
+56% +$67.6K ﹤0.01% 1095
2025
Q4 		$129K Buy
+32,239
New +$117K ﹤0.01% 1000
2024
Q3 		– Sell
-7,575
Closed -$132K – 1063
2024
Q2 		$132K Buy
+7,575
New +$248K ﹤0.01% 669
2021
Q4 		– Sell
-1,530
Closed -$243K – 1215
2021
Q3 		$243K Sell
1,530
-4,217
-73% -$694K ﹤0.01% 855
2021
Q2 		$1.08M Hold
5,747
– – 0.01% 718
2021
Q1 		$1.38M Buy
+5,747
New +$1.51M 0.02% 634

Other funds holding XFOR

Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BCLSI
Bain Capital Life Sciences Investors Boston, Massachusetts $1.68B AUM 126.09% 1-Year Est. Return
PA
Perceptive Advisors New York $6.66B AUM 360.84% 1-Year Est. Return
SVCM
Saturn V Capital Management Austin, Texas $697M AUM 628.57% 1-Year Est. Return
EAM
Empery Asset Management New York $86.5M AUM
DTC
Deep Track Capital Greenwich, Connecticut $6.87B AUM 205.24% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
KCM
Kalehua Capital Management Dallas, Texas $174M AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Hudson Bay Capital Management's XFOR Position: Q2 2026 in Review

Hudson Bay Capital Management sold out of X4 Pharmaceuticals (XFOR) in Q2 2026, closing a stake of 50,287 shares — an estimated $208K sold.

Hudson Bay Capital Management first reported a position in XFOR in Q1 2021 and held it in 6 quarters. The position peaked at $1.38M in Q1 2021. 89 funds tracked by Wall St. Rank hold XFOR as of Q2 2026.

  • Hudson Bay Capital Management reported no remaining X4 Pharmaceuticals position as of Q2 2026 after selling out during the quarter.
  • Hudson Bay Capital Management sold 50,287 X4 Pharmaceuticals shares in Q2 2026, an estimated $208K.
  • Hudson Bay Capital Management first reported a position in X4 Pharmaceuticals in Q1 2021 and held it in 6 quarters.
  • Hudson Bay Capital Management's X4 Pharmaceuticals position peaked at $1.38M in Q1 2021.
  • 89 funds tracked by Wall St. Rank held X4 Pharmaceuticals as of Q2 2026.

Based on Hudson Bay Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.